The super-wealthy characters in "Crazy Rich Asians"—the best-selling book and brand new film, now in theaters—have no trouble finding ways to spend their not-so-hard-earned money, but you can have a great time in Singapore and not even part with much of yours.Related: The Best Hotels in SingaporeMany of Singapore's top attractions are free or low cost, food is inexpensive, and just walking down the busy streets is an experience in itself.Related: Why Singapore Changi Airport Is Still the BestThese Singapore locales appear in "Crazy Rich Asians," and you’ll want to include them in your own travel plans. We’ll refer to the scenes in the story, but no spoiler alerts needed — just a reminder of what awaits visitors to Asia’s tropical Lion City, Singapore.